2 12's will kick butt too, and fit in a grand prix without any trouble. Maybe you can get some 12's for a good price. This would be where I sign off and let the vendors chime in.

Good luck man!! 2-10's or 12's. You'll be happy.

 

wats a vendor haha??

 

There are many "vendors" on here. Basically they're on site retailers at discount prices. Many have local shops. I believe that Seductive sounds, MR2NR, and selective sounds have already posted on your thread. Just click on their profiles and send them a PM (private message). Someone will get you a good deal.